Fifth wheel travel trailer front panel unit exterior surface



FIG. 1 is a perspective view of a fifth wheel travel trailer front panel unit exterior surface illustrating my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof; and,

FIG. 4 is a left side elevation thereof, with the right side elevation being substantially a mirror image. 

The ornamental design for a fifth wheel travel trailer front panel unit exterior surface, as shown and described. 